Scientific MethodScientific Method

The Question….The Question….

Does air resistance change the speed of a

falling object?

Does air resistance change the speed of a

falling object?

The Procedure…The Procedure…

1. One person Stands on Chair2. Person drops three different

paper types. 3. Using a stopwatch, measure the

amount of time it takes each paper type to reach the ground.

1. One person Stands on Chair2. Person drops three different

paper types. 3. Using a stopwatch, measure the

amount of time it takes each paper type to reach the ground.

What were the Variables?What were the Variables?

• Independent?• What we changed ON PURPOSE

•Dependent?• What we measured, or Recorded

•Controlled Variables?• Everything that was kept the same

throughout the investigation.

• Independent?• What we changed ON PURPOSE

•Dependent?• What we measured, or Recorded

•Controlled Variables?• Everything that was kept the same

throughout the investigation.

Our Class Results…Our Class Results…

Data Table: Class Data for Time in Seconds it took for the Paper to Fall to Ground Group # Flat piece of

paper Time in Seconds

Loosely Crumbled

Time in Seconds

Tightly Crumbled

Time in Seconds

1 2.66 .88 .91 2 3.66 2 1.66 3 2.33 1 .84 4 2.24 1.10 .65 5 2.45 1.10 .98 6 2.39 1.3 .84 7 1.72 .99 .78 8 1.74 .96 .85

Mean 2.39 1.16 0.93 Overall Average

2.02 1.04 0.86

1-2 A

Our Class Results…Our Class Results…Data Table: Class Data for Time in Seconds it took for the Paper to Fall to Ground Group # Flat piece of

paper Time in Seconds

Loosely Crumbled

Time in Seconds

Tightly Crumbled

Time in Seconds

1 .91 .93 .99 2 2.37 1.07 1.23 3 1.67 .95 .73 4 1.91 .78 .99 5 2.12 .99 .81 6 1.84 1.02 .78 7 2.51 1.00 .79

3-4 A Mean

1.9 0.96 0.90

Overall Mean

2.02 1.04 0.86

3-4 A

Our Class Results…Our Class Results…

5-6 A5-6 AData Table: Class Data for Time in Seconds it took for the Paper to Fall to Ground Group # Flat piece of

paper Time in Seconds

Loosely Crumbled

Time in Seconds

Tightly Crumbled

Time in Seconds

1 1.72 1.12 1.25 2 1.30 1.07 .91 3 2.60 2.05 1.45 4 0.94 .77 1.27 5 2.24 1.19 1.13 6 2.11 1.60 .72 7 1.11 0.92 1.23 8 2.13 1.93 .39

5-6 A Mean

1.76 1.33 1.04

Overall Mean

2.02 1.04 0.86

Our Class Results…Our Class Results…

1-2 B1-2 B

Data Table: Class Data for Time in Seconds it took for the Paper to Fall to Ground Group # Flat piece

of paper Time in Seconds

Loosely Crumbled

Time in Seconds

Tightly Crumbled

Time in Seconds

1 1.63 0.98 1.24 2 3.01 1.16 1.06 3 2.07 1.11 0.56 4 1.94 0.66 0.77 5 1.73 0.72 0.58 6 1.40 0.85 0.62 7 1.73 0.83 1.37 8 2.07 1.05 0.72

1-2 B Mean

1.95 0.92 0.87

Overall Mean

2.02 1.04 0.86

Our Class Results…Our Class Results…

3-4 B3-4 B

Data Table: Class Data for Time in Seconds it took for the Paper to Fall to Ground Group # Flat piece of

paper Time in Seconds

Loosely Crumbled

Time in Seconds

Tightly Crumbled

Time in Seconds

1 1.95 2.53 .31 2 2.86 0.91 0.81 3 2.65 0.93 0.47 4 1.61 0.93 0.78 5 2.01 0.70 0.61 6 3.88 0.53 0.56 7 1.57 1.18 0.79

3-4 B Mean

2.36 0.97 0.62

Overall Mean

2.02 1.04 0.86

Our Class Results…Our Class Results…

5-6 B5-6 B

Data Tab le: Class Data for Time in Seconds it took for the Paper to Fall to Ground Group # Flat piece of

paper Time in Seconds

Loosely Crumbled

Time in Seconds

Tightly Crumbled

Time in Seconds

1 1.6 0.76 0.73 2 2.10 0.96 0.91 3 2.49 1.20 1.24 4 1.82 1.09 0.96 5 1.49 0.58 0.37 6 1.04 0.70 0.74

5-6 B Mean

1.76 0.88 0.82

Overall Mean

2.02 1.04 0.86

Our Overall ResultsOur Overall Results

Overall Data from All of the Classes

Flat Piece of Paper Time in Seconds

Loosely Crumbled

Time in Seconds

Tightly Crumbled

Time in Seconds

Overall Average

2.02 1.04 0.86

Look at the TRENDS!!!Look at the TRENDS!!!

0

0.5

1

1.5

2

2.5

Time in Seconds

Flat LooselyCrumbled

TightlyCrumbled

Paper Type

The time in seconds it takes for different types of Paper Shapes to Fall to the Ground

1-2A

Overall

Look at the TRENDS!!!Look at the TRENDS!!!

0

0.5

1

1.5

2

2.5

Time in Seconds

Flat LooselyCrumbled

TightlyCrumbled

Paper Type

The time in seconds it takes for different types of Paper Shapes to Fall to the Ground

3-4 A

Overall

Look at the TRENDS!!!Look at the TRENDS!!!

0

0.5

1

1.5

2

2.5

Time in Seconds

Flat LooselyCrumbled

TightlyCrumbled

Paper Type

The time in seconds it takes for different types of Paper Shapes to Fall to the Ground

5-6 A

Overall

Look at the TRENDS!!!Look at the TRENDS!!!

0

0.5

1

1.5

2

2.5

Time in Seconds

Flat LooselyCrumbled

TightlyCrumbled

Paper Type

The time in seconds it takes for different types of Paper Shapes to Fall to the Ground

1-2 B

Overall

Look at the TRENDS!!!Look at the TRENDS!!!

0

0.5

1

1.5

2

2.5

Time in Seconds

Flat LooselyCrumbled

TightlyCrumbled

Paper Type

The time in seconds it takes for different types of Paper Shapes to Fall to the Ground

3-4 B

Overall

Look at the TRENDS!!!Look at the TRENDS!!!

0

0.5

1

1.5

2

2.5

Time in Seconds

Flat LooselyCrumbled

TightlyCrumbled

Paper Type

The time in seconds it takes for different types of Paper Shapes to Fall to the Ground

5-6 B

Overall

Let’s Sum it Up!Let’s Sum it Up!In Your Group write a conclusion for this lab. Be

sure to include (in COMPLETE SENTENCES):*The Question*Your Hypothesis (your pre-lab predictions)

*The Results*An Explanation of the Results

-Why did we get these results -What could we have done differently

In Your Group write a conclusion for this lab. Be

sure to include (in COMPLETE SENTENCES):*The Question*Your Hypothesis (your pre-lab predictions)

*The Results*An Explanation of the Results

-Why did we get these results -What could we have done differently

RecapRecap